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Fair Value - Additional Information (Detail) | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024
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Fair Value, Inputs, Level 1 |  |  |
Fair Value Measurements [Line Items] |  |  |
Vendor quoted prices, percent of FV hierarchy level | 93.00% | 93.00% |
Fair Value, Inputs, Level 2 |  |  |
Fair Value Measurements [Line Items] |  |  |
Vendor quoted prices, percent of FV hierarchy level | 99.00% | 100.00% | 100.00%

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- Definition Fair Value Measurements [Line Items] + References No definition available. + Details
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- Definition The percentage of securities with prices quoted by vendors, calculated based on the total Fair Value in the hierarchy level (Level 1, Level 2, or Level 3). + References No definition available. + Details
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- Details
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- Details
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